Cassidy, Gary. "Chapter 3: Improvisation and Characterisation." The Routledge Performance Archive. : Taylor and Francis, 2016. Date Accessed 21 Sep. 2023 https://www.routledgeperformancearchive.com/browse/commentators/gary-cassidy/chapter-3-improvisation-and-characterisation
Cassidy, G.(2016). Chapter 3: Improvisation and Characterisation. In The Routledge Performance Archive. : Taylor and Francis. Retrieved 21 Sep. 2023, from https://www.routledgeperformancearchive.com/browse/commentators/gary-cassidy/chapter-3-improvisation-and-characterisation
Cassidy, G. 2016, 'Chapter 3: Improvisation and Characterisation' in Routledge Performance Archive, Taylor and Francis, viewed 21 September 2023, <https://www.routledgeperformancearchive.com/browse/commentators/gary-cassidy/chapter-3-improvisation-and-characterisation>